<!DOCTYPE HTML>
<meta charset="utf-8">
<title>originPolicyIds must return the same object each time</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script>
"use strict";
test(() => {
  // Failing this test is a common failure mode for FrozenArray attributes,
  // so let's be sure implementations get it right.
  assert_equals(window.originPolicyIds, window.originPolicyIds);
});
</script>
